Sexual Reproduction in Animals
Great diversities are found in terms of sexual reproduction among animals.
fertilization
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Flowers and Flower Sellers
Flowers are most beautiful and attractive parts of a plant. These contain reproductive structures- male and female. Flowers containing any one of these structures are known as unisexual whereas flowers containing both the reproductive structures are known as bisexual.
Woo Back Lovely Sparrows to Our Homes
Sparrow or the House Sparrow taxonomically belongs to the family Passeridae. It is found in most parts of the world.
Bioinvasion of Foreign and Genetically Engineered Species
An incident of invasion by a living species into entirely new habitat thereby threatening the existence of native species is called as bioinvasion or Biological Invasion.
Water Pollution- Sources and Control
Mixing of different solid, liquid or gaseous substances and microorganisms into water, so as to alter its natural qualities is called as water pollution. According to the National Water Commission (1973), water gets polluted if it has not been of sufficiently high quality to be suitable for the highest uses people wish to make of it at present or in future.
What is Ecosystem? What are its components?
The environment of our earth has a number of life zones that support birth and development of all types of organisms.
All the life zones of the earth are collectively called as Biosphere.
The biosphere vertically extends into the atmosphere up to about 10 km and downwards into the oceans up to a depth of about6.9 km.
One More City Going Down towards Water Crisis
Dams have started drying in Ranchi, the capital of Jharkhand state of India.
… Waiting for the last Gulmohar Tree
Well, I am going to talk about a tree waiting to be cut down for the sake of opening the fifteenth gate of a Stadium, or for the sake of urban development.
Soil- its Conservation and Management
Soil is the loose material that covers the land surface of the earth, supports the growth of plants and acts as a habitat for numerous organisms.
Glaciers of Himalaya are linked to our Existence
Fighting against the Climate Change which has become the biggest problem of environment is a big challenge of today.
What do we consider as – Child Labour?
Children as they grow, start getting involved in the day to day activities of the family to support their parents. These children go to schools and work in the family in leisure periods. Their household activities are neither harmful nor exploitative.
Causes and Impacts of Genetic Erosion
In the modern age of industrialization and competition for development, the human race has badly missed its traditions up to major extents and cultures- up to some extent.
